NAGWare f95 syntax checker
- Checks syntax of Fortran 77 or 95 code online.
- http://cpc.cs.qub.ac.uk/SyntaxChecker.html

TIDY v7.2
- Software to clean up Fortran 77 code. Highly configurable Fortran program to indent and renumber statements, selectively change case of keywords or non-keywords, and do various other clean-up tasks on FORTRAN 77 source programs. TIDY can convert some FORT
- http://www.unb.ca/fredericton/science/chem/ajit/tidy/

Ftagshtml
- Software to help developers navigate source code written in Fortran 77, Fortran 90 and C. Source code is transformed into HTML for browsing.
- http://ftagshtml.sourceforge.net/

F77chk
- Source code checker for Fortran 77, written in Perl, by Tsuguhiro Tamaribuchi.
- http://spdg1.sci.shizuoka.ac.jp/f77chk/indexe.html

OmegaChart
- OmegaChart 3.1 is a Fortran FlowChart generator. This package converts a Fortran source code (f77 & f90, fixed or free form) to its FlowChart equivalent. The generated flowchart is viewable through Microsoft Excel or Microsoft Internet Explorer. Omega
- http://www.download.com/OmegaChart/3000-2383_4-10309559.html

NAGWare Fortran Tools
- Tools to analyse and transform Fortran 77, Fortran 90 and Fortran 95 code.
- http://www.nag.com/nagware/NQ.asp

Diagramf
- Simple diagrammer for Fortran programs, by Mitchell R. Grunes.
- http://www.fortran.com/fortran/diagram.html

Crescent Bay Software
- Tools for parallelization and conversion of Fortran 77 to Fortran 90: generation of new source form, removal of obsolete features, elimination or reduction of GOTOs and labels, generation of array syntax in place of loops. creation of MODULEs from COMMONs
- http://www.crescentbaysoftware.com/end_user.html

Omega Charting Services
- Converts a Fortran 77 source code to its flowchart equivalent, which is then ported into an Excel file.
- http://home.comcast.net/~lchen223621/

Fortran Function Tree (FFT)
- FFT builds an internal representation of the function call hierarchy relations in Fortran 77 code. Several features and options allow the user to customize the generated hierarchy tree chart output and to get a large set of useful information about the so
- http://drn.digitalriver.com/product.php[id]2995[SiteID]macesoftware

Caller v5.2
- 32-bit Windows console application to assist in the reverse engineering of Fortran 77 programs. Caller generates call trees and variable lists. The output is in either text or HTML for easy linked navigation. Caller can optionally annotate the call tree w
- http://drn.digitalriver.com/product.php[id]16268[cid]125[SiteID]macesoftware

Fortran 77 Diagram Graphical GOTO Plotter
- Flowcharting utility.
- http://www.deater.net/weave/vmwprod/f77_diagram/

Floppy
- Software tool that takes as input a file of Fortran 77 code and checks it according to various "coding conventions". Floppy can "tidy" the source Fortran, producing a new file with indented DO-loops, block IF's, and so on. Floppy can b
- http://www.netlib.org/floppy/

WinFPT and FPT
- Tool for testing, quality assurance, migration and re-engineering of Fortran programs. WinFPT is a full GUI-based implementation of FPT for Win32.
- http://www.simcon.uk.com/

Visual StrongType for Fortran 77
- Static typechecker that works on Fortran source code to find algebraic inconsistencies.
- http://www.visualstrongtype.com/download.html

Understand for Fortran
- Interactive development environment tool providing reverse engineering, automatic documentation, metrics and cross referencing of Fortran source code. It supports the Fortran 77 and 90 language standards, with common VAX, Cray and Salford extensions. [Sha
- http://www.scitools.com/uf.html

PlusFORT Fortran Analysis Toolkit
- Product from Polyedron for Fortran source code restructuring, global static analysis, coverage analysis, automated make, and version selection.
- http://www.polyhedron.com/pf/plusfort.html

Fortran Source Check
- Produces compile-time diagnostics of Fortran code using the Lahey/Fujitsu Fortran 95, Lahey Fortran 90, or Essential Lahey Fortran 90 compilers. Can show warnings, perform a Fortran 90/95 conformance check, warn about use of obsolescent features, force im
- http://www.lahey.com/check.htm

Fortran Coverage Analysis Tool (FCAT)
- Finds "cold-spots" in Fortran codes (the part of the codes that are never executed), and flags these parts line-by-line. Finds "hot-spot" in Fortran codes (the part of the codes that are most frequently executed), and gives a line by l
- http://www.dl.ac.uk/TCSC/UKHEC/FCAT/index.html

Foresys
- Fortran 77/90/95 code analysis and reengineering.
- http://www.simulog.fr/eis/fore1.htm

Forcheck
- Statically analyzes Fortran 66/77/90/95 code for syntax and semantic errors. Produces documentation like cross-references and call-tree. Validates for cross-platform conformance. [Commercial]
- http://www.forcheck.nl/

Cleanscape
- FortranLint source code analysis tool simplifies the debugging and maintenance of code by identifying common problems that typically pass through a compiler. Grayboxx is a cross-platform software test automation system.
- http://www.cleanscape.net/products